nochillalisa nochillalisa

01-10-2015
Mathematics

contestada

(x - y)^2 + 4z(x - y) +3z^2 (and btw ^2 means squared and this is going for 10 points)

Respuesta :

01-10-2015

(x - y)² = x² + y² - 2xy

4z(x - y) = 4zx - 4zy

3z² = 3z²

Addum all up:

x² + y² - 2xy + 4zx - 4zy + 3z²

(To me, it was a lot simpler before I simplified it.)

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